Solar Energy

 Solar Energy : Source, Solar heating devices, solar cooker solar cell   Sunlight is Earth’s most abundant energy source and is delivered free of charge. Indeed, the energy from sunlight reaching the land surface of the earth  is thousands of times greater than the world’s current total annual consumption of energy. Yet harnessing sunlight’s energy … Read more Solar Energy

Interior Of The Earth

 Interior of the earth- composition and physical conditions   Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s … Read more Interior Of The Earth

Hydrosphere World Oceans Salinity #U2013 Ocean Currents And Tides #U2013 Ocean Deposits (1)

 Hydrosphere – World Oceans Salinity – Ocean currents and Tides – Ocean Deposits Water is all over on Earth. About 70% of the surface of the planet is roofed by water. If you were an alien visiting the earth, you’d see a large blue sphere from area (especially on the Pacific side). Not … Read more Hydrosphere World Oceans Salinity #U2013 Ocean Currents And Tides #U2013 Ocean Deposits (1)

Pressure And Wind Belt1

 Pressure and wind belts Atmospheric pressure, also called barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates the height of a column … Read more Pressure And Wind Belt1

Land Resources Management (1)

 Land Resources Management Land and water have been the basic elements of life support system on our planet since the dawn of civilization. All great civilizations, flourished where these resources were available in plenty and they declined or perished with the depletion of these resources. In recent years, the land resource has been … Read more Land Resources Management (1)

Rain Water Harvesting (1)

 Rain Water Harvesting Water forms the lifeline of any society. Water is essential for the environment, food security and sustainable development. All the known civilizations have flourished with water source as the base and it is true in the present context too. Availability of drinking water and provision of sanitation facilities are the … Read more Rain Water Harvesting (1)

Resources

 Distribution of major natural resources of World-Water, Soils,  Forests in reference to South and South-East Asia     Distribution of key natural resources across the world (including South Asia and the Indian subcontinent) Natural resources are highly valued because human beings are dependent on them to fulfil their fundamental needs that changes with … Read more Resources